Determination of nutritional condition for greenhouse cucumber by DOP method in Isfahan's greenhouses
2009
Taddionnegad, Masoud | Shahabi, Aliasghar | Moshgelgosha, Narges
Plant analysis is required, together with soil analysis, indesighn of adequate fertilization programs and in the evaluation of soil nutrint use efficiencies by crops. In the most cases, once plant sampling and analytical methodshave been standardized, the interpritationof results is carried out based on "classical" concepts such as concentration on dry matter basis, sufficiency ranges, standard and critical values, nutriant balance, nutriant ratios, etc. The DOP (deviation from optimum percentage) is the last methods. In this desighn 30 cucumber greenhouse have been sampeled. Ten greenhous with with high yield selected for nutrition condition randomisly. Element nutrients such as N, P, K, Ca, Mg, Mn, Fe, Cu, Zn were determined in leaves. Then, DOP index was calculated. Negative number means nutrition limiting, positive numbers means additional nutrition and zero means sufficient nutrition. Base of these numbers The requrment sorting was obtained. In the isfahan greenhouse, many diferent of nutrition condition observe, becase os different nutrient management. So, we can't program for correction of whole greenhouse but we can correct one by one or train greenhouse manegars fondamentaly.
اظهر المزيد [+] اقل [-]الكلمات المفتاحية الخاصة بالمكنز الزراعي (أجروفوك)
المعلومات البيبليوغرافية
تم تزويد هذا السجل من قبل Agricultural Research and Education Organization